Test 11 Module 1 Question 14 HARD Question Made EASY
- Kareem Gouda
- 8 hours ago
- 3 min read
The Passage: Studies of ocean wave breaking have predominantly focused on traveling waves (those propagating along the horizontal plane), so Mark McAllister et al. utilized a circular wave tank to produce and study spike waves, axisymmetric standing waves that can erupt vertically when traveling waves propagating in opposing directions intersect. Traveling waves break when wave steepness (height-to-length ratio) passes a critical threshold; breaking thus constrains wave height. McAllister et al. found that spike waves can exceed that constraint, as other factors than just steepness (e.g., jet stability and cavity shape) mediate spike-wave breaking.
The Question: Which choice best states the main idea of the text?
A) Previous studies have suggested that steepness mediates breaking in traveling waves, but the study by McAllister et al. shows that jet stability and cavity shape may also influence breaking in such waves.
B) The process of breaking limits the height of traveling waves, but the study by McAllister et al. suggests that spike waves can exceed those limits if their height-to-length ratio reaches a critical threshold.
C) McAllister et al. suggest that spike waves can form when traveling waves propagating in opposing directions intersect and that spike waves tend to be higher than traveling waves.
D) The study by McAllister et al. suggests that when traveling waves intersect in specific ways, the resulting wave may be higher than would be expected based on the properties of traveling waves.
Explanation:
Okay, imagine you and a friend are playing in a giant, round swimming pool.
Regular Waves (Traveling Waves): Usually, scientists study regular ocean waves that roll across the beach. These regular waves have a strict rule: if they get too steep and skinny, they trip over their own feet and crash (break). This rule puts a strict speed limit on how tall they can get.
The Awesome Science Experiment: Mark McAllister and his science buddies decided to play in a circular wave pool. They pushed water from opposite sides so the waves would smash into each other right in the middle.
Spike Waves: When those regular waves smashed together, BOOM! The water shot straight up into the air like a geyser. They called these "spike waves." 4. The Big Discovery: Remember that strict rule about regular waves crashing if they get too tall? Spike waves totally ignore it! Because of some cool water physics (like the shape of the splash), spike waves can shoot way higher into the air than regular waves can.
So, what's the main idea? Smashing regular waves together makes a special spike wave that can get much taller than regular wave rules say it should!
Why the Right Answer is Right (and the Wrong Ones are Wrong)
Now, let's look at the answer choices and see who is trying to trick us!
A) The "Mixed Up Variables" Trap ❌
What it says: McAllister found that "jet stability" and "cavity shape" affect traveling waves.
Why it's wrong: The test makers are trying to trick you into mixing up your waves! The passage says those fancy terms affect spike waves, not regular traveling waves. Nice try, SAT! We call this a CONFUSION SKILL.
B) The "Backwards Logic" Trap ❌
What it says: Spike waves get super tall if they reach that critical steepness threshold.
Why it's wrong: This has it totally backwards! The whole point of the passage is that spike waves get super tall because they don't follow the steepness threshold rule. We call this a CONTRADICTION SKILL.
C) The "Old News" Trap ❌
What it says: McAllister suggested that crashing waves make spike waves.
Why it's wrong: McAllister didn't discover that crashing waves make spike waves; scientists already knew that. He just built a pool to study how tall they get once they crash. Also, the passage doesn't say spike waves are always taller, just that they can exceed the normal limits. We call this a CONFUSION SKILL.
D) The Perfect Match ✅
What it says: When regular waves smash together, the new wave they make (the spike wave) can be taller than the rules of regular waves would normally allow.
Why it's right: Ding, ding, ding! This perfectly summarizes the giant bathtub experiment. Regular waves smash -> they shoot up -> they break the height limit rules.
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